Mine worked fine for me, but I've heard spotty accounts of such a thing happening. Perhaps isolated server issues? - Jonathan Brown

You need to upload at least one video to Vimeo for your account to be visible. That's a problem for those who only have a Vimeo account for faving/bookmarking stuff (like myself). - Ole Begemann

@Andreas @Ole it is the same with most services, I started another Twitter the other day and I was working on FF and Twit in parallel so my account was totally fresh and FF wouldn't add it. I think it is probably a mandatory call across all services that FF does to authenticate - Roger Kondrat

@Ole, I dunno but I imported my account here without uploading any video. However, my vimeo account is empty as I didn't mark/fav any videos there. - Hassan Ibraheem

Hassan: hm, maybe I'm wrong. I thought that was the reason. I think I read it somewhere on the Vimeo site. - Ole Begemann